Hacking EZFlash junior is not working on GBA Color

Maxiks · May 17, 2021

When starting the gameboy, the cartridge says that micro sd initial error!
I use a 16gb SDHC mirex card.
Formatted to FAT32 with 32 kilobytes.
I also tried other formatting methods, but it didn’t work.
Gameboy model CGB-001
I changed the batteries on the gameboy itself.
The firmware in the folder was FW4 also tried FW5, but as I understood that I did not get to install it

(Here a mistake in the title, sorry)

Shadow#1 · May 17, 2021

Maxiks said:
When starting the gameboy, the cartridge says that micro sd initial error!
I use a 16gb SDHC mirex card.
Formatted to FAT32 with 32 kilobytes.
I also tried other formatting methods, but it didn’t work.
Gameboy model CGB-001
I changed the batteries on the gameboy itself.
The firmware in the folder was FW4 also tried FW5, but as I understood that I did not get to install it

Got pics of this GBA color?

Maxiks · May 17, 2021

Shadow#1 said:
Got pics of this GBA color?

Maxiks · May 17, 2021

I changed the battery on the cartridge, cleaned the slot and I got the same error :с

Issac · May 17, 2021

Did you put both kernel and firmware in the sd card?

Maxiks · May 17, 2021

Issac said:
Did you put both kernel and firmware in the sd card?

Yes, and even tried different versions

Maxiks · May 17, 2021

Can anyone tell me if the error lies in the SD card? Or it's a broken cartridge?

EZ-Flash2 · May 18, 2021

In recent cases, users need to check whether the partition mode of their SD card is MBR or GPT, and our products only support MBR partition mode

Maxiks · May 18, 2021

EZ-Flash2 said:
In recent cases, users need to check whether the partition mode of their SD card is MBR or GPT, and our products only support MBR partition mode

Still have this problem.
I tried 3 sd cards, all of them have MBR partition mode
SD cards I have tried:
SanDisk 4gb (not ultra and not ultra plus)
Transcend Premium 300x 16gb
Mirex 16gb

Maxiks · May 19, 2021

So does anyone know what the problem is?
Any suggestions?)

EZ-Flash2 · May 19, 2021

Maxiks said:
So does anyone know what the problem is?
Any suggestions?)

Open the case of GBC, find the CPU, take a picture of the CPU.

Maxiks · May 19, 2021

EZ-Flash2 said:
Open the case of GBC, find the CPU, take a picture of the CPU.

What if I can't? Is there some other way?

DrunkenMonk · May 19, 2021

Maxiks said:
What if I can't? Is there some other way?

This should help:

BennVenn said:
If you look under your battery spring, you'll see a 2 digit value. Or none at all. None signifies v01.

GBC-01 = CPU type A

GBC-02 = CPU type B

GBC-03 = CPU type C

GBC-04 = CPU type C or D

GBC-05 = CPU type D

GBC-06 = CPU type E

Maxiks · May 19, 2021

DrunkenMonk said:
This should help:

Am I correct in understanding that I needed to show this?
Sorry I'm just new to this

DrunkenMonk · May 20, 2021

Maxiks said:
Am I correct in understanding that I needed to show this?
Sorry I'm just new to this

No, sorry should've been more specific, it's directly under:

I can't see yours because of the angle, but it's maybe 01 (A) if there's nothing printed under it

Maxiks · May 20, 2021

DrunkenMonk said:
No, sorry should've been more specific, it's directly under: View attachment 263692

I can't see yours because of the angle, but it's maybe 01 (A) if there's nothing printed under it

Well, I checked, and I don't have any number.
So I have CPU type 01 (A) as you said

EZ-Flash2 · May 21, 2021

Maxiks said:
Well, I checked, and I don't have any number.
So I have CPU type 01 (A) as you said

EZ-Flash Junior Initialization Issue | GBAtemp.net - The Independent Video Game Community

This is the reason why I ask you to check the CPU.

The issue already fixed, but you can't upgrade the card firmware with your GBC, you have to find another GB/GBC/GBA/SP to apply the firmware upgrade.

pustal · May 23, 2021

EZ-Flash2 said:
EZ-Flash Junior Initialization Issue | GBAtemp.net - The Independent Video Game Community

This is the reason why I ask you to check the CPU.

The issue already fixed, but you can't upgrade the card firmware with your GBC, you have to find another GB/GBC/GBA/SP to apply the firmware upgrade.

This is the same as this error, righ? When you say, it has been fixed, is there already a stable release with it or are you still referring to Kernel 1.05e and Firmware 5 Release Candidate?

EZ-Flash2 · May 24, 2021

pustal said:
This is the same as this error, righ? When you say, it has been fixed, is there already a stable release with it or are you still referring to Kernel 1.05e and Firmware 5 Release Candidate?

I guess he should encounter this problem, which has been fixed in FW5RC, but FW5RC has certain requirements for SD card, I do not consider recommending the upgrade for now. We are currently dealing with the RTC issue, when this is resolved, we should be able to expect a full version of FW5.

pustal · May 24, 2021

EZ-Flash2 said:
I guess he should encounter this problem, which has been fixed in FW5RC, but FW5RC has certain requirements for SD card, I do not consider recommending the upgrade for now. We are currently dealing with the RTC issue, when this is resolved, we should be able to expect a full version of FW5.

Ok, I've been waiting. Although I've posted here the SanDisk card I bought for it. Can you check if the read / write speeds meet such requirements?

Hacking EZFlash junior is not working on GBA Color

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